<template>
  <div id="app">
    <div id="nav">
      <!-- router-link 默认是被渲染成a标签 -->
      <!-- tag="span" 指定  router-link 渲染成什么标签-->
      <router-link tag="span" to="/">Home</router-link> |
      <router-link tag="span" to="/about">About</router-link>
      <!-- router-link-active 模糊匹配添加class类别 -->
      <!-- / 和 /about-->
    </div>
    <router-view/>
  </div>
</template>

<style lang="scss">
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
}
.router-link-exact-active {
  color: red;
}
#nav {
  padding: 30px;

  a {
    font-weight: bold;
    color: #2c3e50;

    &.router-link-exact-active {
      color: #42b983;
    }
  }
}
</style>
